This database includes the data presented in the appendix of "Patterns of regulatory heterogeneity in international trade:
Intensity, coverage and structure.
 
Indicators are differentiated by broad measure groups and more detailed aggregates, and with respect to whether they are imposed in an MFN or bilateral fashion. Moreover, most indicators are calculated for the years 2000-2016 or 2012-2016, and cover 155 or 119
reporting countries, depending on whether the underlying source data is retrieved from the WTO notifications or NTMTRAINS, respectively.

It includes yearly information for each one of the indicators and at different aggregated sectoral levels such as: 2-digit Harmonized System (HS), the Global Trade Analysis Project (GTAP) aggregates, Broad Economic Categories (BEC) Rev. 4, a 15 sectors aggregation
of the HS provided by theWorld Customs Organization (WCO), and the ISIC Rev. 3 based classification of the International Trade and Production Database for Estimation (ITPDE, Borchert et al., 2020).


It is structured in five folders:
-01_reg_diff_ntmtrains: Contains regulatory differences based on UNCTAD TRAINS database.
-02_int_cov_ntmtrains: Includes intensity and coverage indicators based on UNCTAD TRAINS database.
-03_int_cov_wto: Comprises information on the intensity and coverage measures based on the World Trade Organization database.
-04_var_decomp: Incorporates information for the principal components cnalysis (PCA) based variance decomposition of crosscountry
differences in regulatory stringency. 
-05_association: Contains association analysis indicators between different measure types

